Get the performance benefits of a more rigid chassis by reducing unwanted flex. These adjustable rear frame supports are engineered to improve handling and suspension performance by eliminating chassis flex and decreasing torque transfer. Made from 1" cold rolled steel tubing, supports feature zinc-plated adjustable threaded sleeves to adjust the preload in the rear trailing arm mount after installation. Designed to clear stock & aftermarket mufflers. All necessary hardware included for easy installation. Made in the USA!